In 1959 Kurt Schneider listed the ‘first rank features’ of shizophrenia. One of these symptoms, in the absense of organic disease, persistent affective disorder, or drug intoxiation, was sufficient for a diagnosis of schizophrenia.
Voices heard arguing
Voices heard commenting on one’s actions
The experience of influences playing on the body
Thought withdrawal and other interferences with though
Diffusion of thought
Feelings, impulses and volitional acts experienced as the work or infulence of others